EP2588743B1 - Verfahren zum betreiben einer temperaturbegrenzungseinrichtung, temperaturbegrenzungseinrichtung sowie elektrisches gerät - Google Patents

Verfahren zum betreiben einer temperaturbegrenzungseinrichtung, temperaturbegrenzungseinrichtung sowie elektrisches gerät Download PDF

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Publication number
EP2588743B1
EP2588743B1 EP11729941.2A EP11729941A EP2588743B1 EP 2588743 B1 EP2588743 B1 EP 2588743B1 EP 11729941 A EP11729941 A EP 11729941A EP 2588743 B1 EP2588743 B1 EP 2588743B1
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EP
European Patent Office
Prior art keywords
value
reference value
temperature
limiting device
counter value
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Active
Application number
EP11729941.2A
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German (de)
English (en)
French (fr)
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EP2588743A1 (de
Inventor
Stefan Tumback
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
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Robert Bosch GmbH
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N11/00—Starting of engines by means of electric motors
    • F02N11/10—Safety devices
    • F02N11/101—Safety devices for preventing engine starter actuation or engagement
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N11/00—Starting of engines by means of electric motors
    • F02N11/08—Circuits or control means specially adapted for starting of engines
    • F02N11/0814—Circuits or control means specially adapted for starting of engines comprising means for controlling automatic idle-start-stop
    • F02N11/0818—Conditions for starting or stopping the engine or for deactivating the idle-start-stop mode
    • F02N11/0825—Conditions for starting or stopping the engine or for deactivating the idle-start-stop mode related to prevention of engine restart failure, e.g. disabling automatic stop at low battery state
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N11/00—Starting of engines by means of electric motors
    • F02N11/10—Safety devices
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H35/00—Switches operated by change of a physical condition
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N2200/00—Parameters used for control of starting apparatus
    • F02N2200/04—Parameters used for control of starting apparatus said parameters being related to the starter motor
    • F02N2200/045—Starter temperature or parameters related to it
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/40—Engine management systems

Definitions

  • the invention relates to a method for operating a temperature limiting device of an electrical device that can be activated by means of an activation signal over a limited period of time.
  • the invention further relates to a temperature limiting device and an electrical device.
  • the temperature limiting device is usually associated with the electrical device.
  • the temperature limiting device serves to permit activation of the electrical device when the activation signal occurs only when the temperature of the electrical device or an estimated temperature of the electrical device is below a certain temperature, in particular a limit operating temperature of the electrical device.
  • a certain temperature in particular a limit operating temperature of the electrical device.
  • the electrical device is operated, for example, in such a way that it is initially deactivated, only activated for a short time, ie over the limited period of time, when the activation signal occurs, and then deactivated again.
  • the electrical device may in particular be a starter device of a motor vehicle, thus serves to start an internal combustion engine of the motor vehicle.
  • the electrical device or the starter device is therefore operated to bring the internal combustion engine to a predetermined speed and thus to start.
  • the electric Device again disabled and operated, for example, as a generator. While the electrical device is activated, it generates heat which raises its temperature. If the electrical device is activated for too long a period or too often activated within a certain period of time, the temperature of the electrical device may be greater than the limit operating temperature. This may, as stated above, lead to damage to the electrical device.
  • an electric starter device for an internal combustion engine has a thermal monitoring protection for the decommissioning of the starter device when it reaches its limit operating temperature.
  • the starter device in this case has a device for determining a virtual operating temperature, wherein the device determines the virtual operating temperature as a function of at least one operating parameter influencing the operating temperature of the starter device.
  • the virtual operating temperature is determined, for example, as a function of a current ratio which relates an actual starter current to a reference current.
  • the reference current is in particular a rated current of the starter device. Subsequently, the virtual operating temperature is calculated from the current ratio by integration.
  • a counter is known that is incremented by an enable request signal and decremented over time after the last activation. After the count is then decided in comparison with a fixed threshold, whether an actuator is actually controlled.
  • the method for operating a temperature limiting device with the features of claim 1, however, has the advantage that it is very simple and inexpensive to implement.
  • the counter value thus represents a measure of the temperature of the electrical device.
  • the design of this counter value is flexible.
  • a large counter value may correspond to a high temperature and a small counter value of a low temperature or a small counter value may correspond to a high temperature and a large counter value to a low temperature. This is achieved by the embodiments of incrementing or decrementing with the temperature equivalent value.
  • the condition that the activation of the electrical device is only allowed if the counter value is less than or greater than the reference value must be chosen consistently accordingly: If a large counter value corresponds to a high temperature, the aforementioned condition must be formulated as "smaller” If a small counter value corresponds to a low temperature, the above condition should be formulated as "larger".
  • the output value may be set as a function of at least one particular size.
  • the specific size may be, for example, the ambient temperature, the intake air temperature of the engine intake air, the oil temperature of oil of the internal combustion engine or the aggregate temperature of at least one unit in the region of the internal combustion engine, in particular in the engine compartment.
  • the activation signal, the counter value is compared with the reference value. Only when the counter value is smaller or larger than the reference value, the electrical device is activated or allowed to activate. Subsequently, the counter value is incremented or decremented with the determined temperature equivalent value.
  • the counter value Occurrence of the activation signal but before the activation of the electrical device to increment or decrement. In this case, the counter value is compared with the reference value only after the incrementing or decrementing. In this way, the frequency of activating the electrical device within a certain period of time is limited, so that an increase in the temperature of the electrical device to a temperature greater than its limit operating temperature is avoided.
  • the incrementing or decrementing with the determined temperature equivalent value usually takes place only when the activation signal occurs or only when the electrical device is activated, and then only once, in particular not permanently.
  • the temperature equivalent value is particularly preferably a predetermined value, which is stored, in particular in the temperature limiting device. It can be provided that the temperature equivalent value is determined as a function of the specific variable, that is to say, for example, the ambient temperature, the intake air temperature, the oil temperature or the unit temperature. Alternatively, the determined size may also be the vehicle speed of the motor vehicle. Likewise, it can be provided that a combination of the mentioned variables is used, that is, the temperature equivalent value is determined from at least two of the variables.
  • the counter value is set to the initial value when the ignition is activated, for example. If a driver of the motor vehicle issues the instruction for actuating the starter device, the activation signal is transmitted to the electrical device. If the internal combustion engine does not start in the subsequent activation of the electrical device, the driver can only activate the electrical device until the counter value is greater or smaller than the reference value. Then, to re-enable the starter device, the driver must deactivate and re-enable the ignition to reset the counter value to the initial value. He can therefore not as often without interruption activate the electrical device, whereby the overheating is prevented.
  • the temperature limiting device or the electrical device may additionally have a device which the Activating the electrical device only over the limited period of time. It is therefore no continuous operation of the electrical device possible, which could lead to overheating even at low activation frequency.
  • the device ensures, for example, a deactivation of the electrical device after the expiry of the specific period of time.
  • the invention provides that the counter value, in particular while the electrical device is not activated, is decremented at a certain decrementing rate or incremented at a certain incrementing rate.
  • the "decrementing" here corresponds to the embodiment in which a large counter value corresponds to a high temperature of the electric appliance, the "incrementing" corresponds to the embodiment in which a small counter value corresponds to a high temperature of the electric appliance.
  • the counter value is changed (ie, decremented or incremented) at a certain rate of change (namely, a decrement rate or increment rate) while the electrical device is not activated.
  • a decrement rate or increment rate describes a reduction or enlargement of the counter value in a certain period of time.
  • the decrement rate or the incrementation rate accordingly has, for example, the unit [1 / s].
  • the decrement rate indicates the time after which the counter value is decremented or incremented by a predetermined value, in particular 1.
  • the decrementing is advantageously provided when the counter value is incremented at each activation of the electrical appliance with the temperature equivalent value. If, on the other hand, the counter value is to be decremented, then the counter value must be incremented with the specific incrementation rate. Decrementing or incrementing is advantageously done only while the electrical device is not activated. When the electrical device is activated, it generates heat which raises the temperature of the electrical device. There is therefore no cooling, but rather a heating place. Because a cooling of the electrical device is to be simulated with the decrementing rate or incrementing rate, it is therefore appropriate to carry out the decrementing or incrementing only while the electrical device is being used is not activated.
  • the decrementing rate or the incrementing rate can be determined in a preferred embodiment of the invention as a function of the particular size, for example the ambient temperature, the intake air temperature, the oil temperature, the unit temperature or the vehicle speed.
  • the invention provides that the reference value is determined as a function of the counter value. It can therefore be provided to modify the reference value as soon as the counter value assumes certain values. In this way, for example, a hysteresis or a hysteresis-like behavior of the temperature limiting device can be achieved.
  • the reference value can be selected to be larger starting from the reference value normally used if the electrical device is activated comparatively seldom. In contrast, the reference value is reduced from the reference value normally used when the activation of the electrical device is frequent.
  • the invention provides that the reference value is set to a first reference value when the minimum value is undershot by the counter value. This is especially provided when the counter value is incremented with the temperature equivalent value each time the electrical device is activated and decremented with the decrement rate. As long as the counter value is below or below the minimum value, the reference value should therefore correspond to the first reference value.
  • the first reference value is, for example, a predetermined value.
  • the invention provides that the reference value is set to a second reference value when the maximum value is exceeded by the counter value, wherein the second reference value is in particular smaller than the first reference value. As long as the counter value is greater than or exceeds the maximum value, the reference value corresponds to the second reference value.
  • the second reference value is smaller than the first reference value. In this way, a hysteresis-like behavior of the temperature limiting device is achieved.
  • the second reference value is preferably chosen such that when the maximum value is exceeded by the counter value, the activation of the electrical device from the Temperature limiting device is no longer allowed. Only when the counter value has fallen to the minimum value or falls below this, the reference value should again be selected such that the activation of the electrical device is possible as soon as the activation signal occurs.
  • the minimum value corresponds to the second reference value and the maximum value to the first reference value. This describes the embodiment in which a large counter value corresponds to high temperatures.
  • the counter value is selected such that a large counter value corresponds to low temperatures
  • the sign in all comparisons must of course be inverted to form the hysteresis-like behavior, ie minimum value and maximum value must be interchanged, as well as comparisons "larger” and "smaller”.
  • the second reference value is greater than the first reference value to choose.
  • the minimum value can also be selected independently of the second reference value or the maximum value independently of the first reference value.
  • the temperature equivalent value of a, in particular average, temperature increase of the electrical device generated by activating the electrical device and / or the decrementing rate substantially correspond to a cooling rate of the electrical device.
  • the temperature limiting device can thus be provided only to allow only a certain number of activations of the electrical device per unit time. However, it is particularly advantageous if the actual temperature of the electrical device is mapped at least approximately with the counter value.
  • the temperature equivalent value corresponds to the temperature increase which is to be expected when the electrical appliance is activated.
  • the average temperature increase occurring in the case of different ambient conditions is stored in the temperature limiting device.
  • the decrement rate of the cooling rate of the electrical device can also correspond substantially, wherein advantageously the average decrementing rate occurring under different environmental conditions is also stored.
  • the counter value, the temperature equivalent value and the decrement rate are usually not the actual temperature of the electrical device, but merely a normalized or dimensionless temperature, which is for example based on a reference temperature.
  • the reference temperature can be a predetermined or defined value or can be determined as a function of at least one, in particular measured, environmental state variable. In this way, in addition to the protection of the electrical device before the occurrence of too high a temperature at least approximately statement about the current temperature of the electrical device possible.
  • a development of the invention provides that the temperature equivalent value, the decrementing rate, the incrementing rate and / or the reference value are determined as a function of at least one, in particular measured, environmental state variable and / or driving state.
  • predetermined values or predetermined rates are provided for the above-mentioned values or rates.
  • the values or rates are matched to the at least one environmental state variable.
  • the ambient state variable is, for example, the temperature, which is preferably measured by means of a measuring device.
  • the temperature equivalent value may be greater and / or the decrement rate, the incrementation rate and / or the reference value may be selected smaller.
  • the ambient state quantity may be the ambient temperature, but alternatively also the intake air temperature, the oil temperature or the unit temperature.
  • the temperature equivalent value, the decrementing rate, the incrementing rate and / or the reference value may be determined in addition to or as an alternative to the ambient state variable as a function of the driving state, in particular the vehicle speed.
  • a further development of the invention provides that a starter device of a motor vehicle, in particular a starter generator, is used as the electrical device.
  • the electrical device therefore serves to start an internal combustion engine of the motor vehicle. It is particularly advantageous if the electrical device is designed as a starter generator, that is, it can be used as a generator after activation for starting the internal combustion engine.
  • the invention further relates to a temperature limiting device, in particular for carrying out the method described above.
  • the temperature limiting device is assigned to an activatable by means of an activation signal over a limited period electrical device. It is provided that the temperature limiting device only allows the activation of the electrical device when the activation signal occurs, if a counter value is greater or less than a reference value, wherein the temperature limiting device increments or decrements the counter value each time the electrical device is activated with a specific temperature equivalent value.
  • the temperature limiting device can be developed according to the above statements.
  • the invention also relates to an electrical device, in particular starter device of a motor vehicle, with a temperature limiting device, in particular according to the above statements and / or for carrying out the method according to the preceding embodiments, wherein the electrical device can be activated by means of an activation signal over a limited period of time. It is provided that the temperature limiting device only allows the activation of the electrical device when the activation signal occurs, if a counter value is greater or less than a reference value, wherein the temperature limiting device increments or decrements the counter value each time the electrical device is activated with a specific temperature equivalent value.
  • the electrical device can be developed according to the above statements.
  • the FIG. 1 shows a schematic view of an electrical device 1 with a temperature limiting device 2.
  • the temperature limiting device 2 is provided to prevent overheating of the device 1 during operation of the electrical device 1.
  • the temperature limiting device 2 is a time signal via an input 3 and an activation signal can be fed via an input 4.
  • the electrical device 1 is, for example, a starter device of a motor vehicle and is therefore activated over a limited period of time to bring the internal combustion engine of the motor vehicle to a certain speed and start it.
  • the activation of the electrical device 1 takes place by means of the activation signal.
  • the temperature limiting device 2 allows the activation of the electrical device 1 in the presence or presence of the activation signal only if a counter value is greater than a reference value.
  • the counter value is incremented each time the electric appliance 1 is activated with a specific temperature equivalent value.
  • the counter value is to be decremented with a specific decrement rate. This takes place permanently, but preferably only when the electrical device 1 is not activated. In this way, the counter value at least approximately represents the actual temperature of the electrical device 1.
  • the temperature limiting device 2 is supplied with the time signal. For example, it is provided that the counter value after a certain number of time signals which have occurred are reduced by a predetermined value determined by the decrementing rate.
  • the FIG. 2 shows a schematic representation of a calculation rule of a method for operating the temperature limiting device 2.
  • the calculation rule relates to an increment of a counter value when the activation signal for the electrical device 1.
  • the calculation rule has a start 5, which is followed by a query 6. With the query 6 it is determined whether an activation signal of an electrical device 1 is present. If this is not the case, the system branches according to a path 7 and the query 6 is carried out again. On the other hand, if the activation signal is present, an instruction 8 for incrementing the counter value is executed. The incrementing of the counter value takes place with the specific temperature equivalent value.
  • the value range of the counter value is preferably taken into account, so that overflow is prevented. Such an overflow could otherwise result in a faulty counter value and affect the function of the temperature limiting device 2. It is first checked whether the counter value is greater than a maximum possible counter value less the temperature equivalent value. If this is not the case, then the counter value is incremented with the temperature equivalent value. If, on the other hand, the counter value is greater than the maximum possible counter value minus the temperature equivalent value, the counter value is set to the maximum possible counter value.
  • a query 9 is carried out, with which it is determined whether the electrical device 1 has already been activated over the limited period of time. If this is the case or if the activation of the electrical device 1 has not been permitted, the procedure is along a path 10 and the query 6 is carried out again. On the other hand, if the electrical device 1 is still activated, ie the limited period of time has not yet elapsed, the procedure according to a path 11 is followed and the query 9 is carried out again.
  • the FIG. 3 shows a schematic representation of another calculation rule of the method.
  • the calculation rule concerns decrementing the counter value with the determined decrement rate.
  • the calculation rule begins with a start 12. Following the start 12, a query 13 is performed. This checks whether a time specified by the decrement rate has already been canceled. If this is not the case, the method 14 is moved along a path 14 and the query 13 is carried out again. If the time specified by the decrement rate has passed, an instruction 15 is executed. In this case, the counter value is decremented by a predetermined value, in particular 1.
  • the value range of the counter value is observed in order to prevent the overflow described above.
  • it is checked, for example, whether the counter is greater than the predetermined value or greater than the minimum possible counter value plus the predetermined value. If this is the case, the predetermined value is subtracted from the counter value. Otherwise, the counter value is set to zero or to the minimum possible counter value.
  • the query 13 is performed again according to a path 16. The in the FIG. 3 Calculation rule shown is performed continuously, especially while the electrical device 1 is not activated. Thus, a cooling of the electrical device 1 is shown.
  • the FIG. 4 shows a schematic representation of an evaluation of the counter value.
  • a start 17 is provided.
  • the evaluation has two states 18 and 19. In the first state 18, activation of the electrical device 1 is permitted, while in state 19 the activation is not permitted. After the start 17, the state 18 is initially active. However, if the counter value exceeds a maximum value, state 18 is deactivated and state 19 is activated. In the following, therefore, the activation of the electrical device 1 is not permitted even when the activation signal occurs.
  • the change between the states 18 and 19 is indicated by the arrow 20. If the state 19 is active and the counter value falls below a minimum value, the state 18 is activated and the state 19 is deactivated. This is shown by the arrow 21. In the following, the activation of the electrical device 1 is thus permitted again when the activation signal occurs.
  • the reference value is first set to a first reference value. If the counter value subsequently exceeds the maximum value, then the reference value is set to a second reference value, which is smaller than the first reference value. Only when the counter value falls below a minimum value does the reference value again be set to the first reference value.
  • the first reference value advantageously corresponds to the maximum value and the second reference value corresponds to the minimum value. In this way, a hysteresis-like behavior of the temperature limiting device 2 is achieved.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)
  • Control Of Electric Motors In General (AREA)
EP11729941.2A 2010-07-01 2011-06-20 Verfahren zum betreiben einer temperaturbegrenzungseinrichtung, temperaturbegrenzungseinrichtung sowie elektrisches gerät Active EP2588743B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201010030830 DE102010030830A1 (de) 2010-07-01 2010-07-01 Verfahren zum Betreiben einer Temperaturbegrenzungseinrichtung, Temperaturbegrenzungseinrichtung sowie elektrisches Gerät
PCT/EP2011/060214 WO2012000819A1 (de) 2010-07-01 2011-06-20 Verfahren zum betreiben einer temperaturbegrenzungseinrichtung, temperaturbegrenzungseinrichtung sowie elektrisches gerät

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Publication Number Publication Date
EP2588743A1 EP2588743A1 (de) 2013-05-08
EP2588743B1 true EP2588743B1 (de) 2017-08-23

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US (1) US9234489B2 (zh)
EP (1) EP2588743B1 (zh)
CN (1) CN102959230B (zh)
DE (1) DE102010030830A1 (zh)
WO (1) WO2012000819A1 (zh)

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JP6430106B2 (ja) * 2013-08-26 2018-11-28 東芝ライフスタイル株式会社 消費電力出力装置
FR3018556B1 (fr) * 2014-03-13 2019-06-21 Psa Automobiles Sa. Methode de prediction de l'etat thermique d'un demarreur

Citations (1)

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Publication number Priority date Publication date Assignee Title
DE10053750A1 (de) * 2000-10-30 2002-06-06 Siemens Ag Verfahren und Vorrichtung zur überlastungsfreien Ansteuerung eines Aktuators

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US4901690A (en) * 1988-12-12 1990-02-20 General Motors Corporation Electronic starting motor system having timed cranking period control
GB9215852D0 (en) * 1992-07-25 1992-09-09 Nesbit Evans & Co Ltd Beds
JP2000130299A (ja) * 1998-10-26 2000-05-09 Mitsubishi Electric Corp スタータ保護装置
DE19946808A1 (de) 1999-09-29 2001-04-19 Bosch Gmbh Robert Elektrische Startervorrichtung für eine Brennkraftmaschine
US6437460B1 (en) * 1999-10-27 2002-08-20 Daimlerchrysler Corporation Low power supervisor controller
US6868318B1 (en) * 2003-10-14 2005-03-15 General Motors Corporation Method for adjusting battery power limits in a hybrid electric vehicle to provide consistent launch characteristics
JP4092503B2 (ja) * 2004-03-26 2008-05-28 日産自動車株式会社 エンジン始動装置およびエンジン始動方法
FR2875557B1 (fr) * 2004-09-23 2006-11-24 Valeo Equip Electr Moteur Procede de commande d'une machine electrique tournante
EP1891325B1 (fr) * 2005-05-26 2019-08-21 Volvo Lastvagnar AB Procede de commande de l'alimentation d'un demarreur electrique
FR2944326B1 (fr) * 2009-04-10 2015-10-16 Valeo Equip Electr Moteur Procede de protection thermique d'un systeme d'arret/relance automatique de moteur thermique et systeme l'utilisant

Patent Citations (1)

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Publication number Priority date Publication date Assignee Title
DE10053750A1 (de) * 2000-10-30 2002-06-06 Siemens Ag Verfahren und Vorrichtung zur überlastungsfreien Ansteuerung eines Aktuators

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WO2012000819A1 (de) 2012-01-05
DE102010030830A1 (de) 2012-01-05
US20130162024A1 (en) 2013-06-27
US9234489B2 (en) 2016-01-12
CN102959230B (zh) 2016-10-12
EP2588743A1 (de) 2013-05-08
CN102959230A (zh) 2013-03-06

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